The problem: On the back of a magnetic strip is adhered which is to keep the locking tab.
As mentioned, the strip is glued, and very bad. In the tab, of course is also a magnet, and this breaks the magnetic stripe on the back of simply because not just glued properly. In the first case, the magnetic stripe is even lost, so the bag was accordingly unusable.
Of course it may be that you can make improvements with superglue himself, but I doubt that the band remains stuck in the heat or heat.
I opted for a model of "ROCK", for about the same price and without magnetic closure - very satisfied.
In itself, a very nice and really "ultra slim" pocket, but unusable because bad design.